compare.title

Zustand

import { create } from 'zustand'

const useStore = create((set) => ({
  count: 0,
  increment: () => 
    set((s) => ({ count: s.count + 1 })),
}))

Redux Toolkit

import { createSlice, configureStore } from '@reduxjs/toolkit'

const counterSlice = createSlice({
  name: 'counter',
  initialState: { count: 0 },
  reducers: {
    increment: (state) => {
      state.count += 1
    },
  },
})

export const store = configureStore({
  reducer: { counter: counterSlice.reducer },
})